Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 2, Pages 3023-3029Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.10.005
Keywords
TiO2; Adsorption; Electrospinning; Fly ash; Polyurethane
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Funding
- Korean Ministry of Education, Science and Technology (MEST) through the National Research Foundation (NRF) [2013R1A2A2A04015484]
- Korean small and medium business administration [C0114366]
- Korea Evaluation Institute of Industrial Technology (KEIT) [C0114366] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, we demonstrate the fabrication of multifunctional composite polyurethane (PU) membrane from a sol gel system containing TiO2 and fly ash (FA) nanoparticles (NPs). The adsorptive property of FA and photocatalytic property of TiO2 can introduce different functionalities on PU mat for water purification. Different types of PU nanofiber mats were prepared by varying the composition of NPs in blend solution. FE-SEM, TEM, TGA, XRD, UV-visible spectra, and water contact angle measurement confirmed the incorporation of FA and TiO2 NPs on/into PU nanofibrous mat. The influence of NPs on PU membrane was evaluated from the adsorption of heavy metals (Hg, Pb), removal of dyes (methylene blue), antibacterial activity, and water flux. The improvement of all these activities is attributed to the adsorptive property of FA and photocatalytic/hydrophilic property of TiO2 NPs. Therefore, as-synthesized composite membrane can be utilized as an economically friendly filter media for water purification. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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